化学沉淀法对金属铍的去除性能试验研究

研究了化学沉淀法对水中铍的去除效果及最大应对能力.结果表明,投加5 mg/L三氯化铁或聚合硫酸铁,调节原水pH≥7.5,或投加5 mg/L聚合氯化铝或硫酸铝,调节原水pH≥7.0,均可将原水中0.01 mg/L左右的铍降低至《生活饮用水卫生标准》限值(0.002 mg/L)以内.投加5 mg/L铁盐或硫酸铝可有效应对原...

Removal of beryllium from water by chemical precipitation

The efficiency of chemical precipitation on the removal of beryllium from water and the maximum response ability were investigated.The results indicated that 0.01 mg/L beryllium in raw water could be effectively decreased to lower than the limited value of the Standards for Drinking Water Quality(0.002 mg/L)with dosing of ferric chloride or polyferric sulfate at 5 mg/L,and regulating pH≥7.5,or dosing polyaluminum chloride or aluminum sulfate at 5 mg/L and regulating pH≥7.0.Ferric salt or aluminum sulfate at the dosage of 5 mg/L could effectively treat raw water if the concentration of beryllium is 10 times mass of the limited value.Polyaluminum chloride at the dosage of 5 mg/L could be used to treat the raw water with a concentration of beryllium exceeding 10 times mass of the limited value.